Runner for grinding plate-glass.



C. E. HVB @1, W. F. BENTON.

RUNNER @'53 GRINDING PLATE GLASS. Hummm man SEPT. 21. |915.

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CHARLES SID HOVER AND WALTER FRANKLIN BENTON, QF EUR!) CXTY, PENNSYL- VANIA.

RUNNER- LE'OB GRINDING IPLATE-GLAS$ ia renee.

Specification of Lettei's'atent.

ApplicationledSeptexnberZl,1915. Serial No. 51,830. i

` Grinding Plate-Glass, ol which the :tollen7^ ing is a specification.

Our invention, which generally relates to machines o` apparatus lfor grinding plate g'l ass, more particularly has reference to an in'iproved means for securing' the grinding runner tothefgrinding deck head or disk'.

As is Well known to those fan'iiliar with the -use of plate glass `Ljrindinnv machines, of

that type in which the `dass plate or sheet'v is held on the surface ot a rotary table and ground upon its upper surface hy grinding decks or runners, in the use ot the ordinary types ot grinding decks, the heads of the screws that secure the runners frequently break ofi" and the runners break at `the screw holes. Further,- in the common types of grinding decks, the connections that join the runners to the deck head or disk soon Wear loose and thereby afford room for grit to accumulate, to such an extent that a proper grinding vof the .glass plate is iinpaired. Again, in other forms of glass grinding; decks, the runners are usually at tached'to a deck mounted on the under face ot the deck or. runner carrier by wood screws and in the use of such forms of -I .grinding decks, it is necessary to plug the .crew holes in the wooden deck every time lthe` runner blocks are changed requiring much expense and labor in putting the deck head in shape tor the attachment of the nen7 runner blocks.

Our invention primarily has for its object to provide anV improved vconstruction of grinding deck or head in which an improved means for attaching the blocks directly to` the metal deck head or carrier in such manner that-the'use cfa Wooden deck `and Wooden screws is dispensed with# and by which the runner blocks-can be quickly, and n at a minimum expensed-or' labor, secured to the deck, andin suclinia-nner that the connection is such that lthe runners can he easily .adjusted andlield up solid against the deck and all danger of; grit accumulations `thereby practieallyl overcome.

With 4further'objects in AView that Will hereinafter appear, our invention consiin the lpeculiar combination and novel rangement ci the parts hereinafter eaplained, specifically pointed out in the appended claimsl and illustrated the drawivngi', in which n Figure l is a plan vieiv oil a portion ci the under or face side et ai grindingrunner, so much oi? the runner. j tion being shown necessary to illustrate a practical embodinient et our invention. Fig. a vertical sectionA thereof taken substantially on the line 2 2 on Fig; l. Fig. 3 is a detail vertical section of the cast iron bottom plate or deck portion of the ,f lgrinding` deck, some of the runner bars andthe means for fasteningi the runner bars to the said deck plate or disk. Fig. 'el is a plan View of the bottoni side of the parts shown in `1Fig. Fig. 5 is a plan view oi' one of the runner hars.

in carrying .outour invention, we provide runner hars 2 to rwhich the'blocks 1 are in-v tegrally or otherwise made fast, and said bars rai-y in .length to receive from one block to ii'teen or morehlocks. A w

In assembling the parts, the runner sections are alined to'extend entirely across the being preferably a'iholloiv casting having` a y central huh 6 to provide for vsecuringit to any kind ot shalt 7, whose lower end does not extend clear through the deck head.

'Each runner bar-'2 has its opposite edges beveled, and the bevels 8, which' extend the full. length of the said bars. 2, forni hangers for beine; engaged by theopposite beveled edges of. clamping bars 9-90i Each clamp bar 9 engages the adjacent beveled edges of a pair of runners, as is clearly shown in igs. l and 5, by reference .to which it will be seen the said bars 9-90 at suitable intervals havecountersunk screw holes l() to receive the machine screws l1 that engage screw apertures 12 in the hot tom or deck head et" the casting' 5, and it will. be also seen 'that the alternate ones are screwed up tight aga inst the deck head while the other alternate ones 90 of the said bars have their' bevels so shaped thaty when screwed home theyl fireheld spaced. apart :tronivtlie deck head. in practice, about oneiglitlro'l :in inch.

Byepplying the aiteinatelsets of clamping bari-'s in the manner stated, when it is desired to remore the runner bars, it is only necessary to loosen the alternate clamping bars 90 h v withdrawing their clamp screws enough to perinit the runner bar to pass in or ont when rehloeking, it being understood that the iixedl),7 held clamping bars 5J tend to keep the runner bars as they pass in or out in engagement with the said bars 9.

Each runner har 1:. has a` conntersunk screw hole 2l to receive a serew for hold ing the hai" secure on the deck head and against working endrrise out frein the clamping ha rs.

By reason of i'oriniin: the grinder blocks or runners having `|i -reled or hanging flanges 1l, and providing beveled edged elainp hars thatcoipe `ite with the said run ners andare removably attached to the deck or head of the vasti ng in the manner shown and described. the runners can be quickly applied or removed and since the machine screws engage the screw tapsl that extend entirely through the deck portion of the casting the parts can be qnickli7 and effectiveliy tightened up in case they tend to loosen up and the cost of labor for making wooden pins for plugging up the screw holes. incident in the useof irooden decks, and time in fixing up the said holes, is saved; the connections shown and hereinbefore de seribed also operate to prevent grit from 1working into any place on the .face of the runner blocks or the deck, and guard the runner har-against breaking at the screw holes, thereby aroidingtl'ie danger of break ing the glass which oi'ten occurs when wood screws are used tor fastening the runner blocks onto a wooden deck. Y

lVhile we hareishown the runner bars in parallelism, they can he opposite one an other or in a staggered relation so as to keep the sand or grit from passing through too freely.

What we elaiin is:

1.` A grinding runner, comprising a rigid frame having a deck, a series of runner bars engaging' the odeck and a set oil clamping bars for engaging the runner bars, and means for securing the clamping bars to the deck.

2, grindiinr runnen coin nisinfir a riffide C'i l C D frame lia-ring a decka Series of runner bars engaging the deck and a set of clamping hars for engaging the running bars, means for securing the clamping hars to the deck, the said runner bars and the said clamping bars having engaging beveled edges.

3. A grinding runner comprising a rigid frame haring an integral deck, a series of runner bars engaging the deek spaced apart at predetermined distances and clamping bars that extend entirely across the deck, one of the said bars being located between each pair of runner bars, and engaging the adjacent edges of each ofsaid pairs of runner bars, and means for securing the elamping bars to the deck.

dl. A grinding runner comprising a rigid frame having an integral deck, a series of runner bars engaging the deck spaced apart at predetermined distances, clamping bars that entend entirelyY across the deck, one of the said liars being loeated between each pair of runner hars, said clamping bars and the runner bars having (eo-engaging beveled edges, the deck having screw tapped apertures, the el amping bars having screw holes and machine screws that engage the said holes and the said screw tapsl (llIlARL i S lizll'D l-lGVER. WALTER FRANKLN BEN'ION. 

